I need to see the error in the log. Otherwise, I cannot really help. Try renaming the folder HPL2 at Documents to HPL2-OLD so that it will be recreated. Then, start the level editor as an administrator. Maybe that will fix it.
I've re-installed both level editor and amnesia. So far the level editor haven't crashed, but it's not been used for very long. I shall post an update later.
I also haven't tried loading my old studium map yet. I'm retrieving it from the backups, but I'm a bit afraid to "corrupt" the level editor again.
We will see.
Alrighty, seems to work now!
I'm back working on my custom story now :3
Actually since I re-installed both level editor and amnesia the old studium map even works now.
Which I find pretty weird to be honest, considering I sendt it too my mate which also experienced it crashing.
Anyhow thanks for your help plutomaniac and TarkoRehin.
have fun with the game and the editor then...